Joint ITU-T SG 13 and ISO/JTC1/SC 6
Workshop on
“Future Networks Standardization”
(Geneva, Switzerland, 11 June 2012)
Future Networks standardization in
ITU-T
Takashi Egawa
Q.21 Rapporteur of ITU-T SG13
NEC Corporation
t-egawa@ct.jp.nec.com
Geneva, Switzerland, 11 June 2012
Backcast/forecast in standardization
Historically, standardization target already
existed in the market (backcast)
Modern standardization is done to develop
market (forecast)
Future Networks: long-term forecast
History of standardization is filled with unused
standards, in particular in ICT area…?!
Market size
Traditional
2
Modern
Future
Networks
time
Aims of standardization
Prune options (future possibilities)
Restrict the freedom of innovation
Non-IP packet format is almost extinct
Optimal for particular purpose, but non-standardized (ie,
customized) product cannot become majority if
standardization works well
Define the area of competition, making it severer
(=benefit for consumers)
Simplify our life
Makes some part of our life ‘decided’
We concentrate on remaining part
Expand the market
3
By making average users easier to understand/use
Questions for FN standardization
Do we have enough options?
Are they mature enough to prune, or to freeze
innovation?
Which part is mature, which is not?
Is the emerging market clear enough?
Can we expect enough participation from industries?
ITU-T is contribution driven (no progress without
contribution).
Do industries ready to compromise to expand the
market?
If we specify standards, do market respect our
specifications?
4
FNs was in their early stage, so it was not
appropriate to define overall architecture
It is now changing.
ITU-T Focus Group on Future
Networks (FG-FN) approach
Terminology
Network
virtualization
(Y.3011)
Collection of
Collection of
project
Collection of
project
descriptions
project
descriptions
descriptions
5
Consolidated
vision (Y.3001)
Identification
(Y.FNid)
Collection of
Collection of
project
Collection of
project
descriptions
project
descriptions
descriptions
Vision
Energy
savings of
networks
(Y.3021)
Collection of
Collection of
project
Collection of
project
descriptions
project
descriptions
descriptions
Technology description
on each areas
Future Network related
activity information
Top-down: develops ‘vision’ as mature part
Bottom-up: develops specifications on
particular areas considering research activities
as mature building blocks
Future Networks in ITU-T
SG13 (Future Networks including NGN and
mobile) leads this activity
Approved/agreed on three specifications
Future Networks (FNs) study is now
expanding in SG13
Started in Focus Group on Future Networks
(FG-FN) and Q.21/13
FG-FN: temporary, Q.21: standing
Smart Ubiquitous Network (SUN), the bridge
between NGN and FN is currently studied in
several Qs in SG13
6
ITU-T FN activity timeline
Future Networks
(long-term future)
2009
Q.21 start
2010
2011
2012
FG-FN
5.2011
Vision (Y.3001)
10.2011
Net. virtualization (Y.3011)
energy saving (Y.3021)
identifier (Y.3031)
socio-economic
autonomic-mngt
SUN
(shortterm
bridge)
SDN
Data-aware net
7
Concept
SUN overview
Proposal Concept
Other SUN docs
discussion
Future Networks
(long-term future)
8
Vision of Future Networks (Y.3001)
Definition of FN:
A network able to provide services,
capabilities, and facilities difficult to
provide using existing network
technologies.
Service
A Future Network is either:
awareness
a) A new component network
Service Diversity
or an enhanced version of
Functional Flexibility
an existing one, or
Virtualization of Resources
b) A heterogeneous collection
Network Management
of new component
Mobility
networks or of new and
existing component
Reliability and Security
networks that is operated
as a single network.
Target Date: roughly
2015-2020
4 objectives and
12 design goals
9
Data
awareness
Data Access
Identification
Energy Consumption
Service Universalization
Optimization
Economic Incentives
Environmental
awareness
Social and
economic
awareness
Network Virtualization for FNs
(Y.3011)
 Definition of “network virtualization":
 A technology that enables the creation of logically isolated network
partitions over shared physical networks so that heterogeneous collection
of multiple virtual networks can simultaneously coexist over the shared
networks. This includes the aggregation of multiple resources in a
provider and appearing as a single resource.
 Motivation
Various Services
LINP3
Virtual
Networks LINP1
LINP2
Physical NW 4 Manager
Physical NW 4
Physical NW 2 Manager
Physical NW 2
Physical NW 3
Physical NW 3 Manager
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 Isolation, network abstraction,
topology awareness and quick
reconfigurability, performance,
programmability, management,
Physical NW 1
Physical NW 1 Manager
 Coexistence of multiple
Virtual
networks
Resources
 Simplified access to resources
 Flexibility in provisioning
 Evolvability
 Design goals
Virtual Resources
Manager
design goals
LINP3 Manager
 Problem spaces &
LINP1 Manager
 Diverse services
 Heterogeneous network
architectures
LINP2 Manager
 Key technology for Service
Awareness of FNs
Energy saving for FNs (Y.3021)
 Definition of "Energy saving of networks":
 Network capabilities and their operations where the total energy for
network equipment is systematically used in an efficient manner
 Approaches
 Reduction of required network
capacity
 Improvement of efficiency
 Possible functions
 Energy Control & Measurement
Function
 Three levels of technologies
 Energy Management Function
 Function to calculate the
optimum case of operation
 Status Information Base
 Database of energy-related
information
Energy Management Function
Operating
Sub-function
Operation
DataCollecting
Sub-function
Access
Data
Energy Control &
Measurement Function
Network level
[e.g., routing path]
Equipment level
[e.g., node sleep]
Device level
[e.g., device clock]
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Optimisation
Sub-function
Data
Status Information
Base
[e.g., power consumption,
traffic]
Identification Framework for FNs
(Y.3031)
Motivation
Essential to recognize potential
identifiers pertinent to networks
envisioned in ITU-T
Recommendation Y.3001
So, specify an identification
framework that includes node
IDs, data IDs, user IDs, service
IDs and location IDs in its scope
Future Networks Communication Objects
Devices
User
Data
Identification Framework
ID Discovery Service
ID Spaces
…
Location ID
User ID
Identification Framework
Logically connects
communication objects to
physical networks
Includes four components:
ID
ID
ID
ID
Discovery Service
Spaces
Mapping Registries and
Mapping Service
Detail specifications of these
components would be provided
by future Recommendations.
Services
…
Service ID Node ID
Data ID
IDs Mapping
Registries
ID Mapping Service
Location-based
forwarding
Networks
Various
Networks
(IP, non-IP)
ID-based
forwarding
Networks
Y.FNsocioeconomic
Is this technology good for society?
Economically reasonable?
Some interfaces/mechanisms are too integrated,
and difficult to improve because too many parties are involved
When a technology is given, Y.FNsocioeconomic
Lists and describes methods to assess socioeconomic effect of the technology
Analyze potential tussles among parties
Helps design/select appropriate technology for
Future Networks
13
FN related documents
Status
Short title
Y.3001
Approved(05.11) Future networks: Objectives
and design goals
Y.3011
Approved(10.11) Network virtualization
Y.3021
Approved(10.11) Energy saving
Y.3031
Approved(05.12) Identifiers
Y.FNid-config
Target:12.2012
ID configuration
Y.FNsocioeconomic
Target: 2013
Tech evaluation method
Y.amnsa
Target:12.2012
Autonomic network
management
Y.FNDAN
Target: 2013
Data-aware networking
Y.FNsdn
Target: 2013
Telecom SDN framework
Y.FNsdn-fm
Target: 2013
SDN Formal Lang. Rqrts
Y.Fnvirtreq
Target: 2013
NW virtualization Rqrts
14
Environmental consideration clause
Security is important, and we have security
consideration clause in every standards ---why
not for environment?
Environmental consideration clause is now in
every FN related ITU-T Recommendations
Describes environmental assessment of the
recommended technology
Describes the facts. No evaluation
Development guideline will be necessary in the future
For security consideration, we have RFC 3552,
‘Guidelines for Writing RFC Text on Security
Considerations’. What should be for environment?
15
Environment consideration in Y.3011
(network virtualization)
16
Network virtualization technology changes the resource
(metal, fiber, etc.) consumption and energy consumption of
networks by changing the overall architecture of networks.
This technology enables operators to develop multiple logical
networks on a single physical network. This reduces necessary
physical resources for constructing networks, e.g., optical
fibre or copper cable, which generally reduces energy
consumption.
This technology regroups a set of mechanisms allowing more
than one service to operate on the same piece of physical
resource, thus improving the hardware utilization. This opens
possibility to lower energy consumption because a single
machine under high load generally consumes less energy than
several lightly loaded ones. Also, network virtualization can
support resource consolidation which regroups underutilized
devices to reduce the energy consumption.
A possible drawback is that the structure of each node, in
particular the routers and switches become more complicated,
which may increase energy consumption.
Smart Ubiquitous Networks
(Short-term bridge)
17
SUN, bridge between NGN & FN
current
SUN
Long term future
2015-2020 & beyond
Started 1.2011
0/4 docs
completed
Started 1.2009
4/11 docs
completed
18
Definition of SUN
Smart ubiquitous networks are IP-based packet networks
that can provide transport and delivery a wide range of
existing and emerging services to people and things. The
services provided by the networks can cover aspects such
as control, processing and storage. The networks are
smart in the sense that they are knowledgeable, contextaware, adaptable, autonomous, programmable and can
effect services effectively and securely. The networks are
ubiquitous in the sense that they allow access anytime
anywhere through varied access technologies, access
devices including end user devices, and human-machine
interfaces.
Smart = context aware
Current focus: context aware, content aware, smart
resource managements, programmability, autonomic
network management, ubiquity
19
SUN related documents
Status
Short title
Y.SUNoverview
Target: 6.2012
Overview
Y.SUN-content
Target: 12.2012
Content awareness
Y.SUN-context
Target: 12.2012
Context awareness
Y.SUN-trcmf
Target: 2.2012
Traffic Resource Ctrl. &
Mngt. Functions
20
Backup slides
21
History of FN related activities
1.2009~: a Question (Q.21/13) and a Focus
Group (FG-FN) started their activities
12.2010: FG-FN closure
1.2011: discussion on Smart Ubiquitous Network
(SUN), the bridge between FN and NGN started
5.2011: Y.3001 (FNs: objectives and design
goals), 1st Recommendation approved
10.2011: Y.3011 (network virtualization for FN),
Y.3021 (energy savings of FN) was consented
Study on Four SUN documents started
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